Search found 354 matches

by mcauser
Mon Dec 17, 2018 4:45 am
Forum: General Discussion and Questions
Topic: EEPROM Page write - AT24C512
Replies: 2
Views: 397

Re: EEPROM Page write - AT24C512

Isn't it as simple as: from machine import I2C i2c = I2C(scl=Pin(5), sda=Pin(4), freq=100000) buf = bytearray(b'Lorem ipsum dolor sit amet, consectetur adipiscing elit. Sed metus, hendrerit in elit quis, ultrices Maecenas lobortis sed orci.') i2c.writeto_mem(0x50, 0, buf, addrsize=16) # write 128 by...
by mcauser
Mon Dec 17, 2018 4:16 am
Forum: Other Boards
Topic: Taobao pyboard clone
Replies: 0
Views: 487

Taobao pyboard clone

Found this interesting looking pyboard clone on Taobao:

Image

https://item.taobao.com/item.htm?id=570751617176
by mcauser
Mon Dec 17, 2018 4:08 am
Forum: The MicroPython pyboard
Topic: MicroPython on generic STM32F407 board
Replies: 1
Views: 507

Re: MicroPython on generic STM32F407 board

Similar to our efforts with these other generic F407 boards:
* https://github.com/mcauser/VCC_GND_F407
* https://github.com/mcauser/BLACK_F407VE
* https://github.com/mcauser/BLACK_F407ZE
* https://github.com/SpotlightKid/BLACK_F407ZG

This thread might be better suited on the "Other Boards" topic.
by mcauser
Mon Dec 17, 2018 2:16 am
Forum: Drivers for External Components
Topic: TMP75
Replies: 3
Views: 654

Re: TMP75

Should also work for other TMPx75 sensors, TMP275, TMP175 etc.
by mcauser
Mon Dec 17, 2018 2:15 am
Forum: Drivers for External Components
Topic: TMP75
Replies: 3
Views: 654

Re: TMP75

I don't have one of these sensors, however, the interface seems simple enough. http://www.ti.com/lit/ds/symlink/tmp75.pdf Configure the sensor to use a specific resolution, 9,10,11 or 12 bit. Read 12 bits from the temperature register. Convert data from twos compliment to temperature in Celsius. Sca...
by mcauser
Wed Dec 12, 2018 11:57 pm
Forum: Drivers for External Components
Topic: New Bosch BME280 temperature, humidity, pressure sensor library
Replies: 4
Views: 823

Re: New Bosch BME280 temperature, humidity, pressure sensor library

You rewrote some of their library from scratch in a different language an they claimed copyright? Their licenses looks like a BSD-3-Clause with an extra paragraph. I'm no lawyer or software license expert, but if your work is interpreted as derivative work, then you should comply with their license....
by mcauser
Mon Nov 19, 2018 2:14 am
Forum: General Discussion and Questions
Topic: RpiTX on a STM32?
Replies: 0
Views: 173

RpiTX on a STM32?

If a Raspberry Pi and a piece of wire can be made into a radio frequency transmitter, can a Pyboard / STM32F4 based board too?
https://github.com/F5OEO/rpitx
https://www.rtl-sdr.com/tag/rpitx/

Anyone else experimenting with software defined radio?
by mcauser
Thu Nov 01, 2018 11:40 pm
Forum: The micro:bit
Topic: AZ3166 IOT dev kit with micro:bit edge connector
Replies: 2
Views: 271

AZ3166 IOT dev kit with micro:bit edge connector

Saw this one on Seeed Studio: https://www.seeedstudio.com/AZ3166-IOT-Developer-Kit-p-2922.html It's a $39 EMW3166 based dev board with 128x64 OLED, RGB LED, IR, temp/humid sensor, pressure sensor, magnetometer, motion sensor, "Security IC", audio IC, headphone jack and mini speaker. What caught my e...